12-19-2016, 01:46 PM
Which one of the following statements concerning the Hb’s is correct?
a) Fetal blood has a higher affinity for O2 than does adult blood because Hb fetal has a ↑ affinity for 2,3-BPG
b) Purified Hb has a higher affinity for O2 than does purified Hb A
c) The globin chain composition of Hb Fetal is α2δ2
d) Gamma chains of Hb of fetal, His/H21 is replaced by an uncharged serine residue
e) Hb A1c differs from Hb A by a single, genetically determined AA substitution
f) Hb A2 appears early in fetal life
g) Gamma chains of fetal, His/21 is replaced by charged serine residue
__________________________________72sec from the time Q posted_________________________
a) Fetal blood has a higher affinity for O2 than does adult blood because Hb fetal has a ↑ affinity for 2,3-BPG
b) Purified Hb has a higher affinity for O2 than does purified Hb A
c) The globin chain composition of Hb Fetal is α2δ2
d) Gamma chains of Hb of fetal, His/H21 is replaced by an uncharged serine residue
e) Hb A1c differs from Hb A by a single, genetically determined AA substitution
f) Hb A2 appears early in fetal life
g) Gamma chains of fetal, His/21 is replaced by charged serine residue
__________________________________72sec from the time Q posted_________________________